Physicochemical properties of mixed micelles composed of chitosan cinnamic acid conjugate and Pluronic F127-cinnamic acid conjugate

초록

Chitosan-cinnamic acid conjugate (Chi-CA) and Pluronic F127-cinnamic acid conjugate (Plu-CA) were synthesized for the preparation of mixed micelles. The mixtures of Chi-CA and Plu-CA in the molar ratio of 0.25:1, 0.5:1 and 1:1 were well interface-active. The dimerization degree was in the order of Plu-CA > Chi-CA > free CA. Plu-CA/Chi-CA mixed micelles were circular on TEM, and their mean diameter appreciably decreased when the temperature increased, possibly due to the thermally induced hydrophobic interaction of Plu chains. The temperature-sensitivity was lower when the Chi-CA content was higher. Dry Plu-CA micelles and Plu-CA/Chi-CA mixed micelles exhibited the similar endothermic peak. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier By. All rights reserved.

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